JPS6245849Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork for concrete blocks for simultaneously forming a plurality of concrete blocks having the same cross section, such as precast concrete girders, within the same formwork with partition plates interposed therebetween.

Generally, when manufacturing concrete blocks with the same cross-sectional shape, such as precast concrete girders, the inside of the formwork, which has a long bottom and side mold section, is divided into required lengths by partition plates and filled with concrete. In particular, a large number of blocks can be molded simultaneously using one set of molds.

Formwork for such concrete blocks is the first
As shown in the figure, protrusions 2 are formed on both sides of the partition plate 1, and protrusion fitting holes 4 are formed in the side template 3 at positions corresponding to the protrusions 2, and the side template 3 is assembled. At times, the partition plate 1 is positioned by inserting the protrusion 2 into the protrusion fitting hole 4.

However, formwork is generally assembled by continuously connecting blocks cut into lengthwise sections of several meters each, but recently there has been a trend to assemble several blocks or all of them several times in succession or at once. . In such a formwork, when assembling one side template, it is necessary to insert all the protrusions of a large number of partition plates into the protrusion fitting holes at the same time, and if even one of the protrusions is misaligned, the assembly of the template will be interrupted. It becomes impossible. In addition, if the hole is made larger than the protrusion in order to facilitate the fitting of the protrusion,
Mortar leaks frequently during concrete pouring, which is unfavorable for forming.

The present invention has been developed in view of the above-mentioned problems, and the positioning of the partition plates is such that the protrusions are closely fitted into the small protrusion fitting holes when assembled, and even when a large number of partition plates are used, the positioning of the side template The purpose is to provide a formwork for concrete blocks that can be easily assembled, and its gist is that a bottom template and both side templates are attached to a continuous length of multiple unit length concrete blocks in the longitudinal direction. and a plurality of partition plates that partition the inside of the two templates into units of length,
In the concrete block formwork, the partition plate is provided with a plurality of protrusions on both side edges, and the partition plate is positioned by fitting the protrusions into protrusion fitting holes provided in the both side templates. A projection on one and/or both edges of the partition plate is provided with a cotter hole,
A side template corresponding to the protrusion is provided with a large-diameter window hole into which the protrusion can be easily inserted, and a lid body is provided that can be freely fitted into the window hole and has the protrusion fitting hole in the center. The main feature lies in the formwork for concrete blocks.

Next, an example of the implementation of the present invention will be explained with reference to the drawings from FIG. 2 onwards. In the figure, 10 is the bottom template, and 1
Reference numerals 1a and 11b denote side templates that are set upright on the upper surface of the bottom template 10 to face each other; 12 is an end template; 13
is a partition plate.

The bottom template 10 is fixed onto a pair of supporting base materials 14, 14 made of H-shaped steel members. Side template 11
a, 11b are lower fixing fittings 1 with an L-shaped cross section on the lower edge;
5 is fixed, and the metal fitting 15 is fixed to the bottom template 10 by pressing it with the circular portion 16a at the tip of the lever 16 for pressing the side template. The lever 16 is rotatably supported by a shaft 18 on a protruding arm 17 from the support base 14, and by press-fitting a wedge 19 between the rear end portion 16b and the protruding arm 17, the circular portion 16a is formed. Push the rising part 15a of the metal fitting 15 in the horizontal direction, and push the horizontal part 15b
, thereby pressing the side template 11 downward.
The lower ends of a and 11b are fixed.

Further, an opening stopper 20 is stretched between the upper ends of both side templates 11a and 11b, and pin portions 20a at both ends thereof are fitted into holes in the upper flanges of templates 11a and 11b.

The partition plate 13 is formed to have the same cross-sectional shape as the block to be formed, and has a plurality of tapered positioning projections 21a, 21b on both edges thereof.
are integrally molded, and the protrusion 21b on one edge is provided with a rectangular hole 22, which is an elongated hole facing in the protrusion direction. On one side template 11a, a protrusion fitting hole 23 into which the protrusion 21a of the partition plate 13 is tightly fitted is directly formed on the template surface. Further, the other side template 11b has a circular window hole 24 in which the protrusion 21b of the partition plate 13 is arranged at the center. The diameter of this window hole 24 is approximately twice the maximum width of the protrusion 21b.

A lid 25 is tightly fitted into the window hole 24. The lid body 25 has a protrusion fitting hole 26 opened in the center thereof, into which the protrusion 21b is tightly fitted, and the protrusion 2 inserted into the protrusion fitting hole 26.
By press-fitting the wedge 27 into the socket hole 22 of 1b at a position outside the lid body 25, the lid body 25 is press-fitted into the window hole 24 and the partition plate 13 is positioned.

When assembling the formwork configured in this way, first, one side template 11a is fixed to the bottom template 10, and then the protrusions 21a are inserted into the protrusion fitting holes 23 to attach the partition plate 13 to the bottom template. Install it on top of 10. At this time, the partition plate 13 is arranged so as to be approximately perpendicular to the side template 11a by eye.

Thereafter, the other side template 11b is erected against the bottom template 10 with the lid 25 removed from the window hole 24 thereof. At this time, since the diameter of the window hole 24 is much larger than the width of the projection 21b, each projection 21b can be easily inserted into the window hole 24, and the side template 10 can be easily erected.

After the side template 10 is erected in this manner, the protrusion 21b is inserted into the protrusion fitting hole 26 of the lid 25, and the position is adjusted to fit the lid 25 into the window hole 24. . Then, a wedge 27 is driven into the socket hole 22 of the protrusion 21b protruding from the outer surface of the lid body 25, and the partition plate 13 is fixed.

The concrete block formwork of the present invention is constructed as described above, and one and/or both side templates are provided with window holes in which the projections can be easily inserted, corresponding to the positions of the projections on the partition plate. After assembling the side template by providing a protrusion fitting hole in the lid body that fits into the hole and inserting the protrusion into the window hole, insert the lid body into the window hole with each protrusion inserted into the protrusion fitting hole. By making it possible to fit them together, it became possible to assemble the side templates and position the partition plates individually and easily, significantly improving work efficiency. be.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional partition plate positioning structure, Fig. 2 is a vertical sectional front view showing a formwork of an example of implementation of the present invention, Fig. 3 is a partial vertical sectional side view, and Fig. 4 is a partition plate positioning structure. Partially enlarged longitudinal sectional view of the structural part, No. 5
The figure is a front view of the same, and FIG. 6 is a plan view of the same. 10...Bottom template, 11a, 11b...Side template, 13...Partition plate, 15...Fixing metal fittings, 16
... Lever for pressing side template, 21a, 21b ... Protrusion, 22 ... Cotter hole, 23, 26 ... Protrusion fitting hole, 24 ... Window hole, 25 ... Lid body.

Claims (1)

[Scope of utility model registration request] A plurality of concrete blocks of unit length are provided with a bottom template and both side templates in a continuous length in the longitudinal direction, and a plurality of partition plates are provided to partition the inside of the two templates into units of length, and the partition A concrete block formwork comprising a plurality of protrusions on both side edges of the plate, and the partition plate is positioned by fitting the protrusions into protrusion fitting holes provided in the both side templates, wherein the partition plate A projection on one and/or both edges of the blade is provided with a cotter hole, a side template corresponding to the projection is provided with a large diameter window hole into which the projection can be easily inserted, and the projection can be freely fitted into the window hole. A formwork for a concrete block, further comprising a lid having the protrusion fitting hole in the center.